Rall-rolling apparatus



Aug. M, 1923.

F. M. CANDA BALL ROLLING APPARATUS Filed Oct. 21, 1919 IN V EN TOR.

ATTGRNEY.

I Patented Aug. IlthllQZEO UNITED ra est? FERDIN MDRA CANDA, @lli NEW :ZQldlli, Id. '1. BALL-ROLLING APPARATUS.

a lication filed ember e1, 1919.

To all whom it may concern e it known that l, FERDINAND Mons CANDA, a citizen of the United States of merica, and a resident of New York, in

the county of New York and State of New York, have invented certain new and useful Improvements in Ball-Rolling Apparatus, of which the following is a specification.

' ,y invention relates to apparatus for 1 forming balls, and is particularly intended ,4 for forming, from wrought iron or steel, balls adapted to be used in crusher mills and the like, but is also adapted and intended i. for-forming balls of othermaterials and for other uses,--for example, lead shrapnel bullets, lead shot, lass ballsof various types and uses, etc. y invention comprises coacting grooved ball-forming rolls, together with means for moving one of said rolls toward and from the other, and means for holding in place between said rolls the rod or the like from which the balls are being formed. Other features of my invention will be pointed out hereinafter.

The object of my invention is to form balls, particularly of iron or steel, relatively inexpensively, rapidly, and by simple apparatus.

I will now proceed-to describe my invention with reference to the accompanyin drawings, and will then point out the novel features in claims. In said drawings:

Figure 1 shows a side elevation and partial transverse section of my improved ball rolling apparatus; Figure 2 shows a top view of said apparatus, the upper loco-tor being partly broken away, and the means for raising and lowering said locator being omitted but indicated in dotted lines. Figsection through the rolls and locators, indieating an alternative form of locator, the section being taken on the line 33 of Fig ure 4; and Fi re a shows a fragmentary transverse section on the line of Figure 3.

lln the drawings, 1 desi ates a suitable frame for. the machine, and g and 3 indicate grooved coact-ing ball-'formin rolls, rnount- 5,'bearings 5 being mounted to slide in ways in frame 1, and suitable means, as for example, ram devices 6 controlled by a valve 7, being pro vided for so sliding said bearings 5 and the roll 3. These ram devices 6 may be considered diagrammatic illustrations of any ure 3 shows a detail fragmentary transverse- Serial Ho. 8323M.

suitable means for moving the roll 3 toward and from the roll 2, and l do not limit myselir to any particular means for the purpose.

8 and 9 designate what ll term locators for determining the position between rolls 2 and 3 of the material to be rolled into halls, and for preventing the escape o the balls until such escape is desired. In the arrang ment shown in Figures 1 and 2, these locators may be transverse frames carrying idler rollers 10; or, as indicated in Figures 3 and 4, these lo'cators, there designated as 8 and 9*,- may have comb-teeth 10* in lieu of rollers 10. For adjustment, ram-devices l1 and 12 may be provided for these locators controlled by a valve in the manner previously described in regard to the ram devices 6; also, the ram devices 11 and 12 may be considered as diagrammatic representations of any suitable means for moviii the locators in and out, and l do not limit myself to any particular means for the purpose.

have not indicated any particular means for rotating rolls 2'and 3, but may employ for the purpose the means commonly em-- ployed for rotating the rolls of ordinary rolling mills; except that rolls 2 and 8 should be rotated in the same direction, as

indicated b arrows in It. At the sides roll 3 are hook-shaped members which serve as primary supports and locators for the bars from which the balls are to be formed.

v The operation of myimproved ball-roll mg machine is as follows: Roll 3 havin been retracted, a bar of material to be rolled into balls is introduced between rolls 2 and 3, such-bar resting on the members 13 and roll '3 is then advanced to press said bar againstroll 2. Rolls 2 and 3 being in rots.

tion, the said bar is rotated between rolls 2 and 3, and by the pressure exerted by said rolls, and grooving action of the ribs of said rolls, the material of said her is forced into the grooves of said rolls during its rotation, being caused to talte a form eon responding to that of the grooves of said rolls, and so becoming a series of ball-lilre objects connected by narrow necks; which necks are finally severed or broken as the rolling of the balls proceeds, after which the separated balls usually turn to new axes of rotation, so that the teats (the remnants of the said necks) at the former axis of rotation of each ball are rolled into the body llllO link of the ball, and the metal of the balls is condensed and rendered solid throughout. Of course, in the case of iron or steel, glass, or similar materials, the bar is, at the time of intrmluction, in a heated condition suitable for rolling. Commonly, in the case of iron or steel, and similar materials. the initial diameter of the bar is somewhat less than th diameter of the finished balls, the

metal bein Dressed toward the equatorial portions of the balls from the sides tber o't' during the rolling operation, so that the ball-sections increase somewhat in diameter as the metal enters deeply into the grooves of rolls 2 and 3 and attain ball-form; though the material treated be of somewhat spongy nature, so as to be capable of a con- 'derable degree of compression and condensation, it is possible that the init al diameter otthe bar may be the same as, or even greater than, that of the finished ball.

During the rolling operation, the locators, 8 or 9, or 8 and 9, in connection with the side locators 13, keep the material being acted upon in proper position between rolls 2 and 3, preventing that material from passing down from between said rolls, or from being squeezed up from between said rolls; and if 'necessary or desirable, the positions of said locators 8 and 9 may be adjusted during the rolling operation; for example, as the diameters of the balls increase it may be desirable to slightly retract the said locators in approximate crease in diameter. When the balls are completed, roll 3 is retracted and the balls drop out. from between rolls 2 and 3, while the crop ends of the bar, resting on members 13, drop off from said members, or are knocked ofi therefrom, and a new bar is introduced and the operation repeated.

The machine above described is one in which the operation of rolling the balls is very completely under the control of the operator, who may advance or retract roll 3, and locators 8 and 9, or 8 and 9 as required to crted on the material being treated, or the treatment. He can regulate the time during which the material is being rolled between the rolls in accordance with the degree of hardness of the material as determined either by its nature or its temperature; in a word, the machine is a true machine tool, as distinguished from a mere automatic machine, In a companion case patented February 1, 1921, No. 1,367,299, I have illustrated and described a ball rolling machine comprising coacting grooved ballforming rolls,- in connection with an adjust able presser adapted to press the material acted upon against said rolls. In that machine, the pressure required to be exerted on the material acted on is exerted in the main by the said presser, without any intended accordance with such inregulate properly the pressure exmovement of one of said rolls toward or from theot-her except such'as may occur, as in ordinary rolling-mill practice, due to presence of springs or the like in the bearing-structure of the mill. In the ball-rolling machine of the present application, however, the action of the machine is regulated and determined by advance and retraction of roll 3, the locators 8 and 9, or 8 and 9, being employed mainly to keep the material acted on in proper place between rolls 2 and 3, and being adjusted in position, if at all, during the rolling operation, merely toregulate the position of the material being acted on, or to prevent such undue pressure on the material, during the increase of diameter thereof, as might prevent proper formation of the balls. a

What I claim is 1. In a ball rolling apparatus, the combination of coacting grooved ball-forming rolls, manually controlled means for separating the same and bringing them together, and adjustably controlled locating means for determining the position between said rolls of material to be acted upon.

2. In a ball rolling apparatus, the combination of coacting grooved ball-forming rolls, one of which is mounted to be moved toward and from the other, manually controlled means for so moving such roll, and adjustably controlled locating means for determining the position between said rolls of material to be acted upon.

3. In a ball rolling apparatus, the combination of coacting grooved ball-forming rolls, manually controlled means for separating the same and bringing them together, and an adjustably controlled locator on one side of said rolls for determining the position between said rolls of material to be acted upon.

4. In a ball rolling apparatus, the combination of coaeting grooved ball-forming rolls, manually controlled means for separating the same and bringing them together, and adjustably controlled locators on opposite sides of said rolls for determining the position between said rolls of material to be acted upon.

5. In a ball rolling apparatus, the combination of coacting grooved ball-forming rolls, manually controlled means for sepa-- rating the same and bringing them together, and an adjustably controlled locator on one side of said rolls for determining the position between said rolls of material to be acted upon, said locator comprising arotary roller adapted to bear on the said materia 6. In a ball rolling apparatus, the combination of coacting grooved ball-forming rolls, manually controlled means for separating the same and bringing them together, and adjustably controlled locators on opporolls, manually control emos and manually controlled means for moving said locator 1n and out.

8. In a ball rolling apparatus, the combination of coacting grooved ball-forming rolls, and locating means at the sides of said rolls adapted to receive and support the ends of a bar which may be introduced between said rolls,

9. In a ball rolling apparatus, the comhi- "nation of meeting grooved ball-foing rolls, a-frame having bearings for one of said rolls and having ways in which may ling witnesse,

FERDINAND Witnesses:

H, M. MLAJRBLE, H. E.

slide hearings for the other of said rolls, slidable roll hearings in said ways, manually controlled means for moving said hearings back and forth, and adjustahly controlled locating means for material between said rolls. 7 i

10. in a ball rolling apparatus, the combination of coacting grooved ball-forming .rolls, a frame having hearings for one of said rolls and having ways in which may slide bearings for the other of said rolls, 7

slidable roll hearings in said ways, manually controlled means for moving said hearings back and forth, adjustahly controlled locating means for material between said rolls, and manually controlled means for moving said'locating means in and out.

In testimony whereof I have signed this specification MURA. oai na,

in, the presence of two suloscrihi 

